Guided Notes

Files & Exceptions

Reading and writing files with fstream, checking that files opened, throwing and catching exceptions, and standard exception types.

File streams

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#include <fstream>: ā€¢ std::ofstream ā€” write to a file, ā€¢ std::ifstream ā€” read from a file, ā€¢ std::fstream ā€” both.

std::ofstream out("scores.txt"); out << "Ada " << 91 << "\n";

std::ifstream in("scores.txt"); std::string name; int score; while (in >> name >> score) { ... }

Files close automatically when the stream object goes out of scope (RAII).

ā† Inheritance & Polymorphism